Green’s Dictionary of Slang

(N.Z. prison) to strike, to barricade one’s cell (usu. with one’s bed) to prevent guards entering.

1999		D. Looser ‘Boob Jargon’ in NZEJ 13 : barricadev. To go on strike.
2001		D. Looser Boobslang [U. Canterbury D.Phil. thesis] 13/2: barricade v. 1 to go on strike. 2 to fasten one's cell to prevent prison guards from entering.